1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)floatio.h 8.1 (Berkeley) 6/4/93 33 * $FreeBSD$ 34 */ 35 36 /* 37 * Floating point scanf/printf (input/output) definitions. 38 */ 39 40 /* 41 * MAXEXPDIG is the maximum number of decimal digits needed to store a 42 * floating point exponent in the largest supported format. It should 43 * be ceil(log10(LDBL_MAX_10_EXP)) or, if hexadecimal floating point 44 * conversions are supported, ceil(log10(LDBL_MAX_EXP)). But since it 45 * is presently never greater than 5 in practice, we fudge it. 46 */ 47 #define MAXEXPDIG 6 48 #if LDBL_MAX_EXP > 999999 49 #error "floating point buffers too small" 50 #endif 51 52 char *__hdtoa(double, const char *, int, int *, int *, char **); 53 char *__hldtoa(long double, const char *, int, int *, int *, char **); 54 char *__ldtoa(long double *, int, int, int *, int *, char **); 55